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Model 3438A
Section 111
3-41. T h e Talk A d d r e s s i s u s e r s e l e c t a b l e by t h e
internal A d d r e s s s w i t c h e s A s 1 t h r o u g h A S 5 . T h e
M u l t i m e t e r i s shipped with a d d r e s s select c o d e 2 3 a s
s h o w n in F i g u r e 3-12. T h i s s w i t c h i s binary coded,
i.e., A S 5 h a s weighting of 2 5 = 16, A S 4 h a s
weighting of 2
= 8, etc.
ADDRESSABLE
OPERATE
0
0
0
0
0
ADDRESS
SWITCHES
FRONT
1 0 1 1 1 1 = 2 3 1 0
TALK ONLY
AS7
TEST
AS6
1 (16)
A S 5 (MSD)
A S 4
I ( 2 )
A S 2
I ( I )
AS1 ( L S D )
Figure
3-12.
Address Select Code.
3-42. Sample Applications using three different -hp-
calculators (9815A, 9825A, and 9830A) will be shown in
the following examples. In each of these examples, the
Multimeter is set t o the Addressable t o Talk Mode.
3-43. -hp- 9815A Sample Appllcatlon.
( S e e
F l g u r e 3 - 1 3. 9 8 1 5 A l H P I B
Appllcatlon.)
3-44. -hp- 9825 Sample Application.
( S e e F i g u r e 3 - 1 4 . 9 8 2 5 l H P - I B
Application.)
3-45. -hp- 9830 Sample Application.
( S e e F i g u r e 3 - 1 5 . 9 8 3 0 A l H P - I B
Application.)
3-46. Option Decal.
3-47. the option decal is affixed t o the rear of the
Multimeter. A n example is shown in Figure 3-16.
1 8 6 - 1 06-Vl
1104 127-V
MADE
IN
U
S A
11 9 0 233-vl
1208 250-V
HP 3438A
MULTIMETE
I
1
Figure
3-16.
Option Decal.
3-48. Amps Input Fuse Replacement.
3-49. The a m p s input is protected by a 2 A 250 V normal
blow fuse, -hp- Part Number 2110-0002. This fuse is
easily replaced using the following procedure:
a. Insert a coin o r wide bladed screwdriver into the
slots of the A input terminal.
b. Press the color ring in and rotate it counterclock-
wise 1 / 3 turn.
c. Remove and replace the blown fuse.
3-50. Multimeter Cleaning.
Do no1 allorij cleaning solven~s.~/lux remover,
or alcohol lo come in conlac1 wilh /he
Multimeter.
3-51. T h e Multimeter case and front panel should only
be cleaned with a mild solution of soap a n d water a n d a
soft cloth.
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